EP0734016A3 - Seek control method in optical storage device - Google Patents

Seek control method in optical storage device Download PDF

Info

Publication number
EP0734016A3
EP0734016A3 EP96103752A EP96103752A EP0734016A3 EP 0734016 A3 EP0734016 A3 EP 0734016A3 EP 96103752 A EP96103752 A EP 96103752A EP 96103752 A EP96103752 A EP 96103752A EP 0734016 A3 EP0734016 A3 EP 0734016A3
Authority
EP
European Patent Office
Prior art keywords
present position
track
light beam
detecting
control method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96103752A
Other languages
German (de)
French (fr)
Other versions
EP0734016A2 (en
EP0734016B1 (en
Inventor
Shigenori Yanagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP06028095A external-priority patent/JP3539785B2/en
Priority claimed from JP23528295A external-priority patent/JP3361662B2/en
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to EP00107558A priority Critical patent/EP1063643A3/en
Priority to EP00107597A priority patent/EP1049082A3/en
Publication of EP0734016A2 publication Critical patent/EP0734016A2/en
Publication of EP0734016A3 publication Critical patent/EP0734016A3/en
Application granted granted Critical
Publication of EP0734016B1 publication Critical patent/EP0734016B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08529—Methods and circuits to control the velocity of the head as it traverses the tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

Disclosed is a seek control method in an optical storage device, of seek-moving a light beam of an optical head from a certain track on an optical storage medium to a desired track. This seek control method comprises a step of calculating a target position, a step of detecting a present position from a track error signal indicating a relative position between the light beam and the track, a step of calculating such a feedback control quantity as to zeroize an error between the target position and the present position and a step of controlling a moving mechanism for moving the light beam in accordance with the feedback control quantity. The present position detecting step includes a first present position detecting step of detecting the present position from a signal into which the track error signal is D/A-converted when a velocity of the light beam is low and a second present position detecting step of detecting the present position from a count value obtained by counting track zero-cross signals acquired by slicing the track error signal at a zero level when the velocity of the light beam is high.
EP96103752A 1995-03-20 1996-03-10 Seek control method in optical storage device Expired - Lifetime EP0734016B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00107558A EP1063643A3 (en) 1995-03-20 1996-03-10 Seek control method in optical storage device
EP00107597A EP1049082A3 (en) 1995-03-20 1996-03-10 Seek control method in optical storage device

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP6028095 1995-03-20
JP06028095A JP3539785B2 (en) 1995-03-20 1995-03-20 Optical storage device seek control method and optical storage device
JP60280/95 1995-03-20
JP23528295A JP3361662B2 (en) 1995-09-13 1995-09-13 Optical storage device seek control method and optical storage device
JP235282/95 1995-09-13
JP23528295 1995-09-13

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP00107597A Division EP1049082A3 (en) 1995-03-20 1996-03-10 Seek control method in optical storage device
EP00107558A Division EP1063643A3 (en) 1995-03-20 1996-03-10 Seek control method in optical storage device

Publications (3)

Publication Number Publication Date
EP0734016A2 EP0734016A2 (en) 1996-09-25
EP0734016A3 true EP0734016A3 (en) 1996-11-20
EP0734016B1 EP0734016B1 (en) 2003-12-17

Family

ID=26401347

Family Applications (3)

Application Number Title Priority Date Filing Date
EP00107597A Withdrawn EP1049082A3 (en) 1995-03-20 1996-03-10 Seek control method in optical storage device
EP96103752A Expired - Lifetime EP0734016B1 (en) 1995-03-20 1996-03-10 Seek control method in optical storage device
EP00107558A Withdrawn EP1063643A3 (en) 1995-03-20 1996-03-10 Seek control method in optical storage device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00107597A Withdrawn EP1049082A3 (en) 1995-03-20 1996-03-10 Seek control method in optical storage device

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP00107558A Withdrawn EP1063643A3 (en) 1995-03-20 1996-03-10 Seek control method in optical storage device

Country Status (3)

Country Link
US (4) US5675562A (en)
EP (3) EP1049082A3 (en)
DE (1) DE69631082T2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09282816A (en) * 1996-04-05 1997-10-31 Sony Corp Motor controller, motor controlling method and optical disk drive
JPH09305984A (en) * 1996-05-20 1997-11-28 Fujitsu Ltd Optical memory device
TW386228B (en) * 1998-02-27 2000-04-01 Mediatek Inc Tracking device for an optical pickup head
JP2000285479A (en) * 1999-03-31 2000-10-13 Fujitsu Ltd Information storage device
JP3530429B2 (en) * 1999-09-03 2004-05-24 三洋電機株式会社 Disk unit
US6510019B1 (en) 1999-11-12 2003-01-21 Maxtor Corporation Acceleration tracking position controller
TW513706B (en) * 2000-03-08 2002-12-11 Via Tech Inc Track seeking and track locking method of optical disk
DE10064051A1 (en) * 2000-12-21 2002-12-05 Thomson Brandt Gmbh Position control by means of a track count
US7522480B2 (en) 2001-01-25 2009-04-21 Dphi Acquisitions, Inc. Digital tracking servo system with multi-track seek with an acceleration clamp
US7023766B2 (en) * 2001-01-25 2006-04-04 Dphi Acquisitions, Inc. Flexible servicing of servo algorithms using a digital signal processor
KR100480627B1 (en) * 2002-11-09 2005-03-31 삼성전자주식회사 Method and apparatus for controlling constant linear velocity of spindle motor using mirror signal
EP1568033A1 (en) * 2002-11-27 2005-08-31 Koninklijke Philips Electronics N.V. Method for executing a track jump of an explorer head to retrieve data from a data carrier
JP4389175B2 (en) * 2006-06-13 2009-12-24 ソニー株式会社 Servo control device, servo control method, optical disk device, and video camera recorder
US20080151709A1 (en) * 2006-12-20 2008-06-26 Hon Hai Precision Industry Co., Ltd. Seeking method for optical disk drive
FR2922695A1 (en) * 2007-10-22 2009-04-24 St Microelectronics Grenoble MOTOR CONTROL CIRCUIT WITH MOBILE COIL
JP2011100500A (en) * 2009-11-04 2011-05-19 Hitachi Consumer Electronics Co Ltd Optical disc apparatus and tracking control method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4627038A (en) * 1984-07-05 1986-12-02 Storage Technology Partners Ii Optical disk storage unit having a servo system with different velocity inputs
US4827200A (en) * 1987-04-03 1989-05-02 Mitsubishi Denki K.K. Velocity control unit of detecting head
US4972350A (en) * 1989-05-26 1990-11-20 Literal Corporation Position mode track seek servo for high capacity disk drive system
US5005089A (en) * 1988-05-10 1991-04-02 Quantum Corp. High performance, high capacity micro-winchester disk drive
EP0549282A2 (en) * 1991-12-25 1993-06-30 International Business Machines Corporation Optical disk drive
US5228019A (en) * 1989-04-10 1993-07-13 Fujitsu Limited Method and apparatus for measuring speed of movement during beam track movement in optical memory apparatus

Family Cites Families (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4200827A (en) * 1977-06-29 1980-04-29 International Business Machines Corporation Positioning system employing feedforward and feedback control
GB2039078B (en) * 1978-12-27 1982-11-24 Ibm Sampled data servo positioning system
JPS6139239A (en) * 1984-07-28 1986-02-25 Sony Corp Optical disc player
JPS62110678A (en) * 1985-11-08 1987-05-21 Matsushita Electric Ind Co Ltd Optical disk reproducing device
JPS62120675A (en) * 1985-11-20 1987-06-01 Matsushita Electric Ind Co Ltd Optical disk reproducing device
JPS62185284A (en) * 1986-02-10 1987-08-13 Matsushita Electric Ind Co Ltd Optical disk reproducing device
JPH0673188B2 (en) * 1986-03-31 1994-09-14 松下電器産業株式会社 Optical disk access device
JP2624651B2 (en) * 1986-07-21 1997-06-25 株式会社日立製作所 Light spot positioning method
US5285431A (en) * 1987-12-02 1994-02-08 Mitsubishi Denki Kabushiki Kaisha Information storage device with head position detection outside a user utilizable region and an optical disk drive device having target velocity-controlled head actuation
JP2543061B2 (en) * 1987-01-13 1996-10-16 松下電器産業株式会社 Optical disk access device
JPS63206977A (en) * 1987-02-24 1988-08-26 Matsushita Electric Ind Co Ltd Optical recording and reproducing device
JPH0654542B2 (en) 1987-08-28 1994-07-20 富士通株式会社 Optical storage
US5077719A (en) 1987-08-28 1991-12-31 Fujitsu Limited Optical disk access system
JPH0814945B2 (en) * 1988-04-06 1996-02-14 株式会社東芝 Magnetic head movement control device for magnetic disk device
JP2573301B2 (en) * 1988-04-22 1997-01-22 株式会社東芝 Disk unit
JP2732591B2 (en) * 1988-06-30 1998-03-30 株式会社東芝 Recording medium processing device
JP2756264B2 (en) 1988-08-12 1998-05-25 富士通株式会社 Optical storage device
JPH02230567A (en) * 1989-03-02 1990-09-12 Olympus Optical Co Ltd Track retrieval controller
JPH035975A (en) * 1989-06-01 1991-01-11 Sony Corp Seek circuit for optical disk
US4914725A (en) * 1989-07-10 1990-04-03 International Business Machines Corporation Transducer positioning servo mechanisms employing digital and analog circuits
US5033039A (en) * 1989-07-31 1991-07-16 Literal Corporation Positioning system for flexure mounted read/write head
US5050146A (en) * 1989-07-31 1991-09-17 Literal Corporation Track seek recovery system and method
JP2672019B2 (en) 1989-08-15 1997-11-05 富士通株式会社 Optical disk drive
JPH0782647B2 (en) * 1989-11-08 1995-09-06 富士通株式会社 Optical disk device
JP2657561B2 (en) * 1990-02-09 1997-09-24 富士通株式会社 Positioning control method
JP2656371B2 (en) * 1990-06-26 1997-09-24 富士通株式会社 Optical disk drive
JP3164580B2 (en) * 1990-09-27 2001-05-08 豊田工機株式会社 Digital servo controller
JP2751635B2 (en) * 1990-11-27 1998-05-18 松下電器産業株式会社 Optical disk drive
JP2693281B2 (en) * 1991-03-19 1997-12-24 富士通株式会社 Seek control method for optical disk device and its circuit
JP2987822B2 (en) * 1991-09-19 1999-12-06 オリンパス光学工業株式会社 Access control device
JPH05120701A (en) * 1991-10-28 1993-05-18 Ricoh Co Ltd Optical disk drive
JPH05159493A (en) * 1991-12-02 1993-06-25 Seiko Epson Corp Track servo circuit
JP3626761B2 (en) * 1991-12-26 2005-03-09 松下電器産業株式会社 Control error generator
JP2807118B2 (en) 1992-02-27 1998-10-08 富士通株式会社 Optical disk drive
JP3152726B2 (en) 1992-03-31 2001-04-03 日本フエンオール株式会社 Temperature detector
US5298447A (en) * 1993-07-22 1994-03-29 United Microelectronics Corporation Method of fabricating a flash memory cell
JPH07262719A (en) * 1994-03-17 1995-10-13 Fujitsu Ltd Disk device
US5585976A (en) * 1994-06-22 1996-12-17 Seagate Technology, Inc. Digital sector servo incorporating repeatable run out tracking
JP3377013B2 (en) * 1994-08-18 2003-02-17 日本電信電話株式会社 Disk drive seek control apparatus and seek control method using the same
US5576909A (en) * 1995-02-16 1996-11-19 Ministor Peripherals International Limited Method for positioning a data transducer head in a rotating disk drive data storage device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4627038A (en) * 1984-07-05 1986-12-02 Storage Technology Partners Ii Optical disk storage unit having a servo system with different velocity inputs
US4827200A (en) * 1987-04-03 1989-05-02 Mitsubishi Denki K.K. Velocity control unit of detecting head
US5005089A (en) * 1988-05-10 1991-04-02 Quantum Corp. High performance, high capacity micro-winchester disk drive
US5228019A (en) * 1989-04-10 1993-07-13 Fujitsu Limited Method and apparatus for measuring speed of movement during beam track movement in optical memory apparatus
US4972350A (en) * 1989-05-26 1990-11-20 Literal Corporation Position mode track seek servo for high capacity disk drive system
EP0549282A2 (en) * 1991-12-25 1993-06-30 International Business Machines Corporation Optical disk drive

Also Published As

Publication number Publication date
EP0734016A2 (en) 1996-09-25
DE69631082T2 (en) 2004-06-03
DE69631082D1 (en) 2004-01-29
US6055217A (en) 2000-04-25
US5675562A (en) 1997-10-07
EP1049082A3 (en) 2006-11-22
EP0734016B1 (en) 2003-12-17
EP1049082A2 (en) 2000-11-02
EP1063643A3 (en) 2006-11-22
US6249497B1 (en) 2001-06-19
US6377523B2 (en) 2002-04-23
US20010019521A1 (en) 2001-09-06
EP1063643A2 (en) 2000-12-27

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